It was a beautiful summer day at the "Starnberger See" (Lake Starnberg close to Munich). It was well beyond 30 degrees Celcius and it was humit. In the morning we could see the alpes with the "Zugspitze" in the background. During the day we got more and more clouds the  from the alpes.

The wind was getting stronger - surfers paradise. A thunderstorm was building up. Finally a short but heavy hail shower!